Improvement in burglar-proof safes



09. SAFES, BANK PRDIEDHUN. AND RELATED DEVICES.

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Letters Patent No. naar?, daad Api-i1 18, 1871.

IMPROVEMENT IN BURGLAR-PRCOF SAFES.

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To all whom 'it may concern.:

13e it known that I, EDWARD K. HALL, of Louis.- ville, in the county of Jeersou and State of Kentucky, have invented certain Improvements in Safes, Vaults, and Cells, of which the following is a specifcation, reference being had to the accompanying drawing.

.My invention relates to safes for the preservation of papers and other valuables; and

The invention consists in uniting the series of plates which form the body of the safe by means of mortises and tenons and keys at their edges, all as hereinafter more fully described.

Figure 1 is a front view.of the safe with the door open;

Figure 2 is a vertical section on the line a: a: of fig. l;

Figure 3 is a transverse section on the line z z of Iig. 2; and

Figures 4, 5, and 6 ai'e views of the various plates detached.

In constructing my safe I cut from proper sheets of iron a series of plates for the top and bottom, of the form shown in tig. 4, these plates having one edge turned at .right angles to form a Harige, e, along one side, and having near'the opposite edge a niortise, o, while on each of the two remaining edges, a projection or tenoii, h, through each of which is a liole,r,fo1'the reception of a wedge or key.

I' then construct a back plate, 1,of similar metal, left flat without any fiange, and having a similar projection or tenori, l, with a hole, 1', for a wedge or key on each of its four edges, as shown clearly in fig. 5.

I then prepare two side plates, f, of similar metal, which has a iiange, e,fornied along one edge, the same as on the top and bottom plates, and which has also a mortise, o, iiiade through it near each of its three remaining edges, as shown in iig. 6.'

y These tive plates-two of tig. 4 for top and bottom, one of iig. 5 for the back, and two "of iig. 6 for the sides-constitute, when properly united, the live closed sides of the cubic chest or safe, the remaining or sixth side being occupied by the door, as usual.

v rIhe manner of uniting these plates is as follows:

Theback-plate d is set up and a plate, c, is placed on the top, with its'inortise o fitting over the upper tenen h, and a key, u, put through the hole 1' of the tenon, the plate c having its iiange e at the front.-

Another plate c is then secured to the bottom of the back plate din the same manner. This will form three sides of the cube, with a tenon projecting from the edge of each of the Vthree plates on opposite sides.

New I take a plate, j', and secure it to one of these sides by means of its three mortises, o, fitting onto the three tenons, to which it is keyed in a similarv manner.

On the opposite side, in the same manner, I secure a corresponding plate, f, thus closing up or forming five solid sides of the cubic body.

Over these I then t a series or layer of steel plates,

n, as represented in g. 2, and then over these again I secure in the sam'e manner as before another set of the iron plates c, (l, and j, the top and bottom plates c and the side plates f always being arranged with their lianges e at the front so as to lock over the steel plates n, as represented in fig. 2, and in this way I build up the body to any required thickness, the drawing representing a safe composed of five thicknesses, three of iron and two of steel. It will, ofcourse, be understood that these series of plates will be all firmly secured together by bolts, rivets, or any suitable means, preference being given to the conical drill-proof boltsfor that purpose.

Angle-irons are secured upon all the corners except where tlie flanges e come at the front, and thus there are no cracks or joints into which a wedge can be driven under any of the plates.

Itis, of course, obvious that any number of mortises and tenons may be formed along each side or edge of the plates where they occur, and that thus the plates may be very securely fastened together.

This method or plan of forming the body by a series of plates united in this manner is equally applicable to all kinds of safes, vaults, and cells, and I so nteud to apply the invention.

Having thus described my invention,

1. A safe, vault, or cell composed of a series of plates, united at their edges by means of uiortises, tenons, and keys, substantially as herein described.

2. The plates c and f, provided with flanges o along their front edge, and with inortises or tenons along their remaining edges, for use in the construction of safes, vaults, or cells, substantially as herein set forth.

EDWARD K. HALL.

Witnesses W. 0'. Dones, PHIL. T. Dones. 

